Update setuptools to 75.8.1

[pyup-bot]

This PR updates setuptools from 75.8.0 to 75.8.1.

Changelog

75.8.1

=======

Bugfixes
--------

- Fix wheel file naming to follow binary distribution specification -- by :user:`di` (4766)
- Fixed crash generating error message printed when building wheels for the
free-threaded build using the limited API. -- by :user:`ngoldbaum` (4809)
- Fix documentation for recent CFLAGS distutils change. -- by :user:`thesamesam` (4836)

Links

• PyPI: https://pypi.org/project/setuptools
• Changelog: https://data.safetycli.com/changelogs/setuptools/

[pyup-bot]

Closing this in favor of #66